Epson Endeavor WG - Manual (Page 173)

CPU
Central Processing Unit. The primary computer device that
interprets instructions, performs the tasks you indicate, keeps
track of stored data, and controls all input and output
operations. See also Microprocessor.
The highlighted marker or pointer that shows the screen
position at which keystrokes will appear when typed or where
the next mouse command will be executed.
Cylinders
The vertical alignment of tracks in a hard disk that can be lined
up under one read/write head. The number of tracks on a disk
is equal to the number of cylinders times the number of heads.
See also Trucks.
D a t a
Information, such as text or graphics, stored or processed by a
computer.
Data diskette
A formatted diskette on which you store data files (as opposed
to program files).
Default
Any value or setting choice that the computer or a program
makes when the user does not specify an alternative. A default
value stays in effect unless you override it temporarily by
changing the value or you reset the default value itself.
6 Glossary